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The Weistec M156 Stage I, Stage II, Stage III, and 50 State legal CARB certified supercharger offering for the naturally aspirated 63 AMG motors has been updated along with price drops. Weistec officially announces the Stage 3 system as well which includes the updated 3.0 liter twin screw blower. The Stage III setup is capable of 1000 horsepower but of course without a built motor including forged pistons and rods the motor will not reach this output.

Stage I

Let's start with the Stage I whose price is now $12,999.99 and rated at 534 wheel horsepower and 560 pound-feet of wheel torque:

If the Stage I is not enough power (and when is it ever enough power?) the Stage II is available for the same price of $12,999.99 which should make it fairly easy for one to choose this Stage for a bit more power and torque over the Stage I:

Here is the big boy Stage III featuring the 3.0 liter twin screw upgrade from the 2.3 liter. Power output on stock internals for this stage is 630 wheel horsepower. This is good for just under a 100 wheel horsepower gain on top of the Stage II. And at a price of $15,780.99 it is difficult to not encourage someone in the market to pay the difference and step up to the largest power offering possible on the stock internals with room to grow with built internals should one desire it. And with there never being enough horsepower this is definitely a smart way to go with future growth in mind.

If one is concerned about emissions and the environment (the responsible AMG owner) there is also the 50 State Legal system which is CARB certified. It does offer the least amount of power but is safe for the environment and compliant with emissions laws which certainly is important. This setup will provide "only" 501 wheel horsepower which certainly is more than enough for the vast majority of 63 AMG owners who wish to simply supercharge and not have to worry about emissions legality or testing. Pricing is $13,499.99.

By dropping prices and expanding the product offering Weistec proves it is well aware of the economic climate remaining very competitive and assertive offering multiple packages depending on customer desire and needs. Weistec is able to cater to any M156 owner and the dollar per horsepower ratio here is hard to argue against and naturally aspirated M156 motors simply will not be able to match the power, torque, and potential of these supercharger setups. Congratulations to Weistec for adjusting to the market and continuing to raise the bar.

why do u have a 3 liter supercharger!!!! u will never max out ur 2.3 liter sc cause the engine will not hold more boost cz its not forged
whats the benifit of the 3 liter sc

We are happy to answer any questions you may have. Our Stage 2 system which utilizes the 2.3L compressor is right in its efficiency range at that power level (about 670-675HP at the crank) when installed on an M156 engine. In testing we have made much more than this with the 2.3L (closer to 800HP at the crank on even a stock engine) but we were completely out of the compressors efficiency and reliability would go downhill if we were to sell that. In essence, we maxed The 2.3L compressor out. Instead we designed the new 3.0L Stage 3 system which easily makes the same power, but with much cooler air charge temperatures, less boost, and much less struggle. Please let us know how we can assist.

i thought that the m156 cant take more boost in stock form and the 2.3 have more than enough boost for the engine ...guess i was wrong !!

You could probably blow the motor with the 2.3 if you're wondering but the whole point is moving the compressor out of its efficiency range. It's like pushing a centrifugal or turbo too far, diminishing returns and other potential problems. More power potential with less heat is what you want.

We are happy to answer any questions you may have. Our Stage 2 system which utilizes the 2.3L compressor is right in its efficiency range at that power level (about 670-675HP at the crank) when installed on an M156 engine. In testing we have made much more than this with the 2.3L (closer to 800HP at the crank on even a stock engine) but we were completely out of the compressors efficiency and reliability would go downhill if we were to sell that. In essence, we maxed The 2.3L compressor out. Instead we designed the new 3.0L Stage 3 system which easily makes the same power, but with much cooler air charge temperatures, less boost, and much less struggle. Please let us know how we can assist.

It is a incorrect to say a centrifugal supercharger will make more up top horsepower. The fastest cars in the world run positive displacement superchargers. It is much easier to gain size and increase CFM while fitting a system under the hood. As an example, the physical size difference between a Vortech S-trim and a Vortech T-trim is virtually identical yet the T-trim will flow a lot higher. Now compare physical size of our 2.3L and 3.0L system. Hope this helps.

If you are concerned about the drivetrain the PD supercharger can be tamed to have progressive boost and/or boost by gear. I built one such setup previously.

I disagree with the statement about the fastest cars in the world being PD cars. There is no PD blower on the market that can compare with the F series from Procharger. The F ranges from 2,700 CFM to to 4,000 CFM (excluding the F1 which is a big ass D series) while a 4.0L Whipple only flows 2,500 CFM, a roots PD blower would be far far less.

If you are concerned about the drivetrain the PD supercharger can be tamed to have progressive boost and/or boost by gear. I built one such setup previously.

I disagree with the statement about the fastest cars in the world being PD cars. There is no PD blower on the market that can compare with the F series from Procharger. The F ranges from 2,700 CFM to to 4,000 CFM (excluding the F1 which is a big ass D series) while a 4.0L Whipple only flows 2,500 CFM, a roots PD blower would be far far less.

Please do some more research before posting on our threads, and do yourself a favor and look up top fuel drag racing when you get a second to see what kind of supercharger they use. Thanks.

My initial intent was to offer some insight for the person that was concerned about their drivetrain.

That person doesn't even have an M156 and brought up an off topic post that has nothing to do with this product release.

Secondly, Weistec has driveline upgrades available for those seriously concerned.

Also, the fastest accelerating cars do have positive displacement superchargers. I personally run a centrifugal and it pushes quite a bit of CFM. Also easier to tune for and package. There are merits to both approaches with pluses and minuses.

As far as "turn key" systems, which it may be more accurate to say blowers used for the street, it would be interesting to compare the max CFM for some of the popular centrifugal and twin screw blowers but we can do that in another thread so this one can get back on topic.

The centrifugal will make less torque down low which definitely helps transmission longevity but where is the fun in that?

Joe you are over looking the majority of the people who buy sc kits. Not all are Ecampbell or JRcart. Not all turn their cars into drag monsters.

Originally Posted by Weistec

Please do some more research before posting on our threads, and do yourself a favor and look up top fuel drag racing when you get a second to see what kind of supercharger they use. Thanks.

Weistec Engineering

OK that's rude. A guy tried to help another person in a thread about your kits. That doesn't downgrade your products or hurt your credibility.

I apologize for taking this into OT.

Originally Posted by ArthurJGuy

If you are concerned about the drivetrain the PD supercharger can be tamed to have progressive boost and/or boost by gear. I built one such setup previously.

I disagree with the statement about the fastest cars in the world being PD cars. There is no PD blower on the market that can compare with the F series from Procharger. The F ranges from 2,700 CFM to to 4,000 CFM (excluding the F1 which is a big ass D series) while a 4.0L Whipple only flows 2,500 CFM, a roots PD blower would be far far less.

Thanks for your respond. I'm familiar with such setup. Audi's 3.0l SC'd motor does the same job.

And i agree with you on the CFM part. No positive displacement can match CFM of a big centri. Centrifugal gives you a worse power band but with higher pick numbers and that's why KB or whipple'd Mustangs are faster than Vortech or Procharged ones in quarter mile. But racing isn't limited to drag strips

The new user in his very first post says he builds SC setups and mentions a different system in the same post which leads me to believe he is from a company that produces a different SC and I suspect this is why Weistec was short with him.

Joe you are over looking the majority of the people who buy sc kits. Not all are Ecampbell or JRcart. Not all turn their cars into drag monsters.

Uh... you aren't even buying this product or in the market. Not to mention the trans worked fine for up to a Stage 2 plus. Have you experienced the car? Have you seen it perform on the strip? I have. You are making design decisions from across the globe when you haven't developed a supercharger for any 63 AMG vehicle.

If you want a centrifugal go get one. They have their pluses and minuses as stated already but this isn't a centrifugal versus positive displacement debate and I have no idea why you are bringing it up. Discuss it in a thread that isn't a Weistec product release as it's rude and disrespectful.

As of today, Weistec has the most comprehensive offering for the M156 and nobody else is even close. You might think you know better... but you don't.